Question

我有一个基于以下MongoDB架构的集合，这涉及电子商务交易，我有目的地使用单个文档来实现任何更新的原子性，如下所示。

我将在报告中提供以下三个用例。

对所有州的所有customerTransactions进行总结。
对每个州的所有customerTransactions进行单独待定/确认/可用/兑换。
以兑换状态处理所有customerTransactions的总和，按日期分组。

用例1＆amp; 2对我来说很简单，但对于用例＃3，我可以对模式做更多的事情，以使其更容易实现。

    {
      "_id":"id",
      "cuid":"CUIDFromCustomerCollection",
      "customerTransactions":{

        {
        "retailer":"www.walmart.com","purchaseAmount":"123.00","cashbackAmount":"12.00","state":"pending","transactionTimestamp":"timestampValue","updateTimestamp":"timestampValue"
        },
        {
          "retailer":"www.walmart.com","purchaseAmount":"123.00","cashbackAmount":"12.00","state":"confirmed","transactionTimestamp":"timestampValue","updateTimestamp":"timestampValue"
        } , 
        {
          "retailer":"www.walmart.com","purchaseAmount":"123.00","cashbackAmount":"12.00","state":"available","transactionTimestamp":"timestampValue","updateTimestamp":"timestampValue"
        } ,
          {
          "retailer":"www.walmart.com","purchaseAmount":"123.00","cashbackAmount":"12.00","state":"redeemed","transactionTimestamp":"timestampValue","updateTimestamp":"timestampValue"
        }

}

Answer 1

该设计适用于所有三种用例。

对“customerTransactions.state”进行索引将有助于优化。

MongoDB架构设计 - 启用原子性

1 个答案: